Piano music courtesy of Steinway & Sons -- The Entertainer played by Spiro recorded live via iPhone at the Green Hills Mall (2014) used with permission.You’ve seen those commercials for a home battery backup system & it’s a crock I ran the numbers Another example of “it’s not what we don’t know which endangers us, it’s what we know that is Wrong which imperils US.” Yes, I have considered buying a home backup generator since my spouse is on oxygen therapy. The barrier is the cost of $8000 according to Generac. Lately, they have shifted to a battery backup solar array for even more money with a tax credit if you act this year. Here’s the problem the battery storage capacity is “limited”. Yes, charging the backup battery is indeed free because it’s solar. When there’s no sun after dark the charge is maintained by the electric provider. If anyone tells you different they don’t know anything about alternating current.